Advanced Queuing - Oracle

Enqueuing and Dequeuing Of Messages
Enqueuing and Dequeuing of Object Type Messages Using Pro*C/C++
Note: You may need to set up data structures similar to the
following for certain examples to work:
$ cat >> message.typ
case=lower
type aq.message_typ
$
$ ott userid=aq/aq intyp=message.typ outtyp=message_o.typ \
code=c hfile=demo.h
$
$ proc intyp=message_o.typ iname= \
config= SQLCHECK=SEMANTICS userid=aq/aq
#include
#include
#include
#include
/* The header file generated by processing
object type ’aq.Message_typ’: */
#include "pceg.h"
void sql_error(msg)
char *msg;
{
EXEC SQL WHENEVER SQLERROR CONTINUE;
printf("%s\n", msg);
printf("\n% .800s \n", sqlca.sqlerrm.sqlerrmc);
EXEC SQL ROLLBACK WORK RELEASE;
exit(1);
}
main()
{
Message_typ *message = (Message_typ*)0; /* payload */
message_type_ind *imsg; /*payload indicator*/
char user[60]="aq/AQ"; /* user logon password */
char subject[30]; /* components of the */
char txt[80]; /* payload type */
/* ENQUEUE and DEQUEUE to an OBJECT QUEUE */
/* Connect to database: */
A-12 Oracle9i Application Developer’s Guide - Advanced Queuing